A mirror lies along the curve y = x4 where x and y are in metres. Start by considering a light ray traveling along the line x = 2.08 In towards the mirror. Light ray Shiny side :23: 0 Figure 1. A light ray enters a shiny parabolic mirror from the ydirection. Part 1) Write a equation to describe the normal to the parabola at the point this ray hits the reflecting surface. Part 2) What is the gradient of the line along which the reflected ray travels? Part 3) If you consider a number of different parallel incident rays you will find there is a point, the focus, through which all the reflected rays pass. What is the value of this point? 12: m